Roberts



dln-ital time @met dtjljlirr.

nnRoBEnrs', or BROOKLYNNEW YORK.

Laws Patent No. 93,007, met .my 27, 1869.

vnNTILA'rrNG-nprnnnrus.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern l l Beit known that I, E. L. ROBERTS, of Brooklyn, inthe county of Kings, and State of New York, have invented a new and improved Ventilating-Apparatus; and I do herebydeclare that the following is afull, clear, and exact description thereof, which will enable others skilled in the 'art to make and use the same,

reference' being had to the accompanying drawings,

forming part of this specilication.

This invention relates to improvements in ventilating-apparatus for buildings, and has for its object to provide a simple and eiicient arrangement of passages, heater,and valve-device, which, while governing the volume of air admitted, either to cause it to pass into the room through a cold-air passage, or through `a pas-` sage bringing it intocontact with a heater, will always admit 'a full volume 'of air, 'thereby keeping up the maximum degree of circulation, the arrangement being such that a movement of a single hand-crank, or other valve-operating device, eiiects the necessary valve-adjustment for causing the air to pass in either direction, all as hereinafter more fullyzspecifed.

Figure 1 represents a sectional elevation of a part lofa building, with my improved apparatus applied to vair is conveyed from the level ot', or below the level of theliioor of a room, into the same through the ceiling or the sides near theceiling. It is also applicable to other similar methods. v

In theconimon arrangement of heating and ventilating-apparatus, the hot air is supplied through one conductor or register, and cold air by another, each separate and independent of the other, .requiring attention to two sets of valves.or.registers for properly regulating the air, between which there can be no uniformity of action, and consequently theiiow of air may at times be wholly cut on from both sources, or wholly admitted from both, from which deleterious results willobviously follow.

My invention contemplates a uniform and constant flow of air through the room, adaptedto'the capacity of the same at all times, and capable of variation as to temperature by a simple movement of a valve.

In the `drawing- A represents the'inteiior of the room, to be supplied with air throughthe top, and exhausted through the bottom, according to the' method'des'cribed in the patvent to me, above alluded to.

B represents the shaft or passage for the air from below to the space C above the ceiling, from which 1t passes into the room.

'Y When the natural temperature of the air is such as not lto be uncomfortable to the occupants `of atoom, it is designed to be caused to pass in without' contact with a heater, and then passes, according to my 1mpproved arrangement, under the valve D, atC, but if required to be heated, it is required to pass up along 'the heater E through the space F.

This valve D is intended for closing one passage and opening the other simultaneously, by a movement in one direction, and nice corsa, and is suspended by-a chain, G, or otherwise from a winding-shaft, H, thestem ofwhich projects into the 'ro om.

`By this simple arrangement, the air passing in-'at vthe mouth I, at the base of the shaft, may be caused to pass over the heater or not, as required, or a part may pass one way-and a part the other, in any required proportions, according to the temperature of lthe external air and that required in the room, and

this vregulating is accomplished by the movementv of one valve only, and so as to always maintain the same 1 area of opening, and consequent-lythe same measure of air and degree of activity thereof.

The passage H is intended to admit the measure oi air oonstantantly requiredf I may'apply this .plan of arrangement under various j modifications, as it may-be found most desirable to arrange thel air-passages and heater, one example of which is'sh'own in iig. '3, wherein the cold-air passage to the shaft B is at K, whilethat only which passes over the heater enters Vat the passage I, and the valve is made in two parts I)1` and D2, and suspended from 'a pulley or pulleys L, capable of oscillation, to wind the chains either way, and having a stem for operating it passing through the wall. to the room.

Instead of sliding valves, the ordinary registers may beused, by connecting the cords or .chains so as to open or close the slats thereof. y

Having thus described my invention,

I claim as new, and desire to secure by Letters Patent-.- A l The arrangement of cold and hot-air passages, heater, and valve-devices foropening the one passage and closing the other, andfuice versa, simultaneously, by one and the same movement of the valve-apparatus, substantially as specified.

The above specification of my invention signed by me, this 27th dayl of May, 1869. l

Witnesses: E. Ir. ROBERTS.

FRANK BLOGKLEY, ALEX. F. ROBERTS. 

